On the importance of caloric measurements for the knowledge of the functions S σ and U of paramagnetic salts at low temperatures

✍ Scribed by H. Van Dijk

• Publisher: Elsevier Science
• Year: 1941
• Weight: 489 KB
• Volume: 8
• Category: Article
• ISSN: 0031-8914
• DOI: 10.1016/s0031-8914(41)90022-8

✦ Synopsis

From the second law of thermodynamics the author deduces expressions which show,' that not only S but also ~ and U can be obtained from caloric measurements. For a and U measurements of three kinds offbeat quantities are generally needed. But in the important case in which =/{(U--a.)

IT}, measurements at constant field only, or measurements at constant temperature combined with measurements of the specific heat at zero field, will be sufficient to obtain those parts of ~ and U that depend on temperature.